diff --git a/src/test/perl/PostgresNode.pm b/src/test/perl/PostgresNode.pm
index de07277f0f..c663e91a7b 100644
--- a/src/test/perl/PostgresNode.pm
+++ b/src/test/perl/PostgresNode.pm
@@ -1511,8 +1511,10 @@ sub poll_query_until
 
 		$stdout =~ s/\r\n/\n/g if $Config{osname} eq 'msys';
 		chomp($stdout);
+		$stderr =~ s/\r\n/\n/g if $Config{osname} eq 'msys';
+		chomp($stderr);
 
-		if ($stdout eq $expected)
+		if ($stdout eq $expected && $stderr eq '')
 		{
 			return 1;
 		}
@@ -1525,8 +1527,6 @@ sub poll_query_until
 
 	# The query result didn't change in 180 seconds. Give up. Print the
 	# output from the last attempt, hopefully that's useful for debugging.
-	$stderr =~ s/\r\n/\n/g if $Config{osname} eq 'msys';
-	chomp($stderr);
 	diag qq(poll_query_until timed out executing this query:
 $query
 expecting this output:
diff --git a/src/test/recovery/t/013_crash_restart.pl b/src/test/recovery/t/013_crash_restart.pl
index f81ccce1e3..44ae421647 100644
--- a/src/test/recovery/t/013_crash_restart.pl
+++ b/src/test/recovery/t/013_crash_restart.pl
@@ -134,12 +134,8 @@ ok( pump_until(
 $monitor->finish;
 
 # Wait till server restarts
-is( $node->poll_query_until(
-		'postgres',
-		'SELECT $$restarted after sigquit$$;',
-		'restarted after sigquit'),
-	"1",
-	"reconnected after SIGQUIT");
+is($node->poll_query_until('postgres', undef, ''),
+	"1", "reconnected after SIGQUIT");
 
 
 # restart psql processes, now that the crash cycle finished
@@ -213,7 +209,7 @@ ok( pump_until(
 $monitor->finish;
 
 # Wait till server restarts
-is($node->poll_query_until('postgres', 'SELECT 1', '1'),
+is($node->poll_query_until('postgres', undef, ''),
 	"1", "reconnected after SIGKILL");
 
 # Make sure the committed rows survived, in-progress ones not